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Finance Assistant

Recruiter
Guilford Street Laboratories
Location
London
Salary
£30,000 - £35,000 per year
Contract
Permanent
Work pattern
Part Time
Working arrangement
2 days in office
First listed by Ontap
21 October 2026
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Job description

Finance Assistant (Part-Time)

King s Cross, London £30,000 £35,000 Pro Rata 24 Hours per Week Hybrid (1-2 days in office)

Are you an experienced Finance Assistant who enjoys keeping everything organised, accurate and running smoothly? Confident using Xero and looking for a flexible, part-time opportunity where your experience will genuinely make a difference?

Guilford Street Laboratories is looking for a reliable, hands-on Finance Assistant to join our team.

Working closely with our CFO, you'll take ownership of day-to-day bookkeeping and help keep our finances running smoothly. This is a mainly remote position, with regular visits to our King's Cross office.

The Role

You'll be part of a small, collaborative team, working alongside external accountants, tax advisers and payroll providers.

Your responsibilities will include:

Managing daily bookkeeping and financial records using Xero
Processing customer invoices, supplier invoices and payments
Managing purchase orders through Dext and ApprovalMax
Coding transactions and preparing online banking payments
Reviewing and processing employee expenses
Supporting payroll, VAT and foreign currency transactions
Preparing journals and assisting with month-end and year-end close
Supporting audits and responding to finance-related queries

About Us

At Guilford Street Laboratories, we're helping shape the future of diagnostics. Using advanced machine learning, we're developing smarter ways to detect and monitor disease, supporting better outcomes for patients worldwide.

What We're Looking For

We're looking for someone who can hit the ground running, manage their own workload and take pride in getting the details right.

You'll need:

At least 5 years' experience in a similar finance or bookkeeping role
Strong working knowledge of Xero or similar accounting software
Experience with VAT, payroll, journals and month-end processes
Confidence managing invoices, purchase orders and supplier payments
Excellent attention to detail, organisation and communication skills
AAT, CIMA or ACCA qualifications are desirable, as is experience with Dext, ApprovalMax and outsourced finance providers.

What's On Offer?

£30,000 £35,000 salary, pro rata
24 hours per week with mainly remote working
A varied role with genuine responsibility
Direct exposure to senior leadership
Supportive team and excellent work-life balance
Interested?

If you're an experienced Finance Assistant looking for flexibility, variety and the opportunity to contribute to an innovative business, we'd love to hear from you.

Apply today and take the next step in your finance career. References will be required.

Apply Now